Electromagnetic flowmeters SITRANS F M TRANSMAG 2. Operating Instructions 12/2010 SITRANS F

Transcription

1 Electromagnetic flowmeters Operating Instructions 12/2010 SITRANS F

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3 Introduction Safety notes 1 2 SITRANS F Description Installing Electromagnetic Flowmeters Connecting Operating Instructions Commissioning Functions Service and Maintenance Troubleshooting Technical data Parameters Profibus Communication Appendix A B C 12/2010 A5E

4 Legal information Warning notice system This manual contains notices you have to observe in order to ensure your personal safety, as well as to prevent damage to property. The notices referring to your personal safety are highlighted in the manual by a safety alert symbol, notices referring only to property damage have no safety alert symbol. These notices shown below are graded according to the degree of danger. DANGER indicates that death or severe personal injury will result if proper precautions are not taken. WARNING indicates that death or severe personal injury may result if proper precautions are not taken. CAUTION with a safety alert symbol, indicates that minor personal injury can result if proper precautions are not taken. CAUTION without a safety alert symbol, indicates that property damage can result if proper precautions are not taken. NOTICE indicates that an unintended result or situation can occur if the corresponding information is not taken into account. If more than one degree of danger is present, the warning notice representing the highest degree of danger will be used. A notice warning of injury to persons with a safety alert symbol may also include a warning relating to property damage. Qualified Personnel The product/system described in this documentation may be operated only by personnel qualified for the specific task in accordance with the relevant documentation for the specific task, in particular its warning notices and safety instructions. Qualified personnel are those who, based on their training and experience, are capable of identifying risks and avoiding potential hazards when working with these products/systems. Proper use of Siemens products Note the following: WARNING Siemens products may only be used for the applications described in the catalog and in the relevant technical documentation. If products and components from other manufacturers are used, these must be recommended or approved by Siemens. Proper transport, storage, installation, assembly, commissioning, operation and maintenance are required to ensure that the products operate safely and without any problems. The permissible ambient conditions must be adhered to. The information in the relevant documentation must be observed. Trademarks All names identified by are registered trademarks of the Siemens AG. The remaining trademarks in this publication may be trademarks whose use by third parties for their own purposes could violate the rights of the owner. Disclaimer of Liability We have reviewed the contents of this publication to ensure consistency with the hardware and software described. Since variance cannot be precluded entirely, we cannot guarantee full consistency. However, the information in this publication is reviewed regularly and any necessary corrections are included in subsequent editions. Siemens AG order number: A5E Copyright Siemens AG Industry Sector P 12/2010 Technical data subject to change Postfach NÜRNBERG GERMANY

5 Table of contents 1 Introduction Preface Items supplied History Further Information Safety notes General safety instructions Laws and directives Description Overview Operating principle Features BUS Communication Installing General Information Sensor installation Potential equalization of sensor (reference potential) Turning the local display Transmitter installation Wall mounting with standard mounting plate Pipe or wall mounting with assembly bracket Connecting General Information Step 1: Connecting power supply Step 2: Connecting signal cables Step 3: Connecting terminal box and transmitter Commissioning Operating TRANSMAG Write protection Language and illumination Operating examples Functions Menu structure...37 Operating Instructions, 12/2010, A5E

6 Table of contents 7.2 Function Group Display Function Group Diagnostics Function Group Measuring Functions Function Group Device Outputs Function Group Identification Function Group Service Service and Maintenance Maintenance Cleaning Changing fuses Recalibration Technical support Return procedures Troubleshooting Quick sensor check-up Application Problems Error messages Application information guide Technical data Dimensions A Parameters B Profibus Communication B.1 PROFIBUS Communication B.2 Wiring devices with Profibus PA B.3 Cyclic Data Traffic B.4 Input Data (from Slave to Master) B.5 Status bytes B.6 Output Data (from Master to Slave) B.7 Diagnostics B.8 Write Protection B.9 Device Database File (GSD) B.10 Literature list C Appendix C.1 Certificates C.2 Ordering Index Operating Instructions, 12/2010, A5E

7 Introduction Preface These instructions contain all the information you need for using the device. The instructions are aimed at persons mechanically installing the device, connecting it electronically, configuring the parameters and commissioning it as well as service and maintenance engineers. Note It is the responsibility of the customer that the instructions and directions provided in the manual are read, understood and followed by the relevant personnel before installing the device. 1.2 Items supplied Wall mounting kit Cable glands Ferrite cores 1.3 History The contents of these instructions are regularly reviewed and corrections are included in subsequent editions. We welcome all suggestions for improvement. The following table shows the most important changes in the documentation compared to each previous edition. Edition Remarks 02/2008 TRANSMAG / Intermag 02/2008 TRANSMAG All information concerning Intermag was removed. 02/2009 TRANSMAG 2 Op. Instr. Restructering of contents. 08/2010 TRANSMAG 2 Op. Instr. Information on the compact version was removed. Operating Instructions, 12/2010, A5E

8 Introduction 1.4 Further Information 1.4 Further Information The contents of these operating instructions shall not become part of or modify any prior or existing agreement, commitment or legal relationship. All obligations on the part of Siemens AG are contained in the respective sales contract which also contains the complete and solely applicable warranty conditions. Any statements contained herein do not create new warranties or modify the existing warranty. Product information on the Internet The Operating Instructions are available on the CD-ROM shipped with the device, and on the Internet on the Siemens homepage, where further information on the range of SITRANS F flowmeters may also be found: Worldwide contact person If you need more information or have particular problems not covered sufficiently by the operating instructions, please get in touch with your contact person. You can find contact information for your local contact person on the Internet: See also Local contact person ( Product information on the internet ( 6 Operating Instructions, 12/2010, A5E

9 Safety notes General safety instructions CAUTION Correct, reliable operation of the product requires proper transport, storage, positioning and assembly as well as careful operation and maintenance. Only qualified personnel should install or operate this instrument. Note Alterations to the product, including opening or improper repairs of the product, are not permitted. If this requirement is not observed, the CE mark and the manufacturer's warranty will expire. 2.2 Laws and directives General requirements Installation of the equipment must comply with national regulations. Instrument safety standards The device has been tested at the factory, based on the safety requirements. In order to maintain this condition over the expected life of the device the requirements described in these Operating Instructions must be observed. It generally applies for electrical installation: Use heat-resistant cables if high temperatures occur on the housing, e.g. due to heat conductance from the sensor/measuring pipe. Ensure that the cables do not touch the hot sensor tube. CE-marked equipment The CE mark symbolizes the compliance of the device with the following guidelines: EMC guideline 2004/108/EC Low voltage guideline 2006/95/EC Pressure equipment directive (PED/DGRL) 97/23/EC The SITRANS F M magnetic-inductive measuring devices comply with protection class I. Operating Instructions, 12/2010, A5E

10 Safety notes 2.2 Laws and directives 8 Operating Instructions, 12/2010, A5E

11 Description Overview is a pulsed alternating field magnetic flowmeter where the magnetic field strength is much higher than conventional DC pulsed magnetic flowmeters. This makes it ideal for difficult applications as: High concentrated paper stock > 3 % Heavy mining slurries Mining slurries with magnetic particles The complete flowmeter consists of a flow sensor 911/E and the associated SITRANS F M TRANSMAG 2 transmitter. TRANSMAG 2 is available in a remote version. The 911/E sensor is available with diameters from DN 15 to DN 1000 (½" to 40"). 3.2 Operating principle is a microprocessor-based transmitter with a built-in alphanumeric display in several languages. The transmitters evaluate the signals from the associated electromagnetic sensors and also fulfil the task of a power supply unit which provides the magnet coils with a constant current. The magnetic flux density in the sensor is additionally monitored by reference coils. Further information on connection, mode of operation and installation can be obtained from the sensor data sheets. Figure 3-1 magnetic-inductive flow transmitter Operating Instructions, 12/2010, A5E

12 Description 3.3 Features 3.3 Features Fast signal processing with 16-bit technology Automatic recognition of the sensor type and calibration data as result of SmartPLUG. The SmartPLUG is a pre-amplifier in the sensor with integrated data module which contains the stored factory data of the sensor and customer-specific data. PROFIBUS-PA (Profile 2.0) or HART communication Simple, multi-language menu-guided operation with two-line display and four optical input elements Self-monitoring function Internal simulation for all input and output functions Monitoring of the sensor using magnetizing current and reference voltage as well as wet electrode function Analog output and digital outputs for pulses, device status, limits, flow direction, frequency output Optional passive switch input for resetting the counter values or for switching off the measuring equipment (PZR) With pulsed alternating field for minimum conductivity of 0.1 μs/cm Slurry mode Parameters can be specifically selected and modified, e.g.: Operating parameters such as measuring range, physical dimensions or device information Limits for flow, counter configurations Noise suppression using separate interference suppression and damping as well as hysteresis functions Automatic mains synchronization Display parameters (freely configurable text display) Display in volume or mass units Density as constant input value for conversion of volume into mass Low flow cut-off Forward and reverse flow measurements Flow direction display and evaluation Diagnostics functions and control values PROFIBUS address Functions of analog output: proportional flow, failure signal Functions of digital output 2 (relay): alarm, forward or reverse flow signal, min. or max. limit for flow and counter Simulation of output signal via analog output, digital output 1 and digital output 2 Option: digital output 2 as digital input for resetting counter values or for interruption in measurement (PZR) 10 Operating Instructions, 12/2010, A5E

13 Description 3.4 BUS Communication 3.4 BUS Communication is available with HART or PROFIBUS communication. The HART protocol is superimposed on the analog output (current output). This communication capability permits parameterization of the device using the HART communicator or a PC/laptop and SIMATIC PDM software in addition to local operation. In the PROFIBUS PA version, the analog output and the digital output 2 are replaced by the digital PROFIBUS PA output. Parameterization of the device is then possible using PROFIBUS communication and SIMATIC PDM in addition to local operation. Operating Instructions, 12/2010, A5E

14 Description 3.4 BUS Communication 12 Operating Instructions, 12/2010, A5E

15 Installing General Information This chapter describes how to install the flowmeter. CAUTION The device meets the requirements of IP67 degree of protection. Proper installation is a prerequisite for compliance with this degree of protection. Please observe the instructions in this chapter. The maximum permissible ambient and medium temperatures must be observed at all times. The measuring tube should be filled exclusively with media to which the seal and lining materials are chemically resistant. Only conductive media are permissible. WARNING If the surface of the sensor or sensor tube can get hotter than 50 ºC in the application, fire protection and/or a warning sign must be provided. 4.2 Sensor installation The measuring principle is generally independent of the flow profile unless static eddy currents penetrate the measured value forming zone (e.g. after pipe elbows, in the case of tangential occlusion or half open slides in front of the sensor). Measures to normalize the flow profile are necessary in such cases. Suitable measures in this respect are: increasing the inlet and outlet lines using flow rectifiers reducing the line cross section CAUTION It is recommended to use protective rings (orifice protectors) to protect the inlet and outlet edges of the sensor against mechanical damage especially when used with abrasive media. Protective rings are available as accessories. Operating Instructions, 12/2010, A5E

16 Installing 4.2 Sensor installation Vertical/horizontal installation Figure 4-1 Horizontal / vertical installation Inlet/outlet section The inlet and outlet lines must be kept straight Figure 4-2 Installation between pipe elbows, valves and pumps 14 Operating Instructions, 12/2010, A5E

17 Installing 4.2 Sensor installation Sensor location Do not install the sensor in pipe sections with a free pipe outlet which could run empty. When installing in a downpipe, make sure that the pipe is always filled 100% with the medium Figure 4-3 Installation in pipes without emptying Avoid installation at the highest point of the pipe because of accumulation of gas Figure 4-4 Installation at the highest point Install the flowmeter so that the measuring pipe cannot run empty and is always filled with medium. The sensor must be installed in a culvert in the case of an unfilled pipe or only a free level line (outlet). Figure 4-5 Installation in a constantly filled pipe Operating Instructions, 12/2010, A5E

18 Installing 4.2 Sensor installation Line cross sections By reducing line cross sections you have the possibility of installing smaller sensors in pipes of larger rated widths. This has the advantage that the speed in the sensor increases with small flows and thus a better measuring accuracy is achieved. To avoid the formation of eddy currents in the sensor, the angle of reduction should not be greater than 8. <8 < 8 dr d 1 d 2 da Figure 4-6 Example of reduction of a line cross section Note Reductions cause losses in pressure. 16 Operating Instructions, 12/2010, A5E

19 Installing 4.2 Sensor installation Potential equalization of sensor (reference potential) The sensor must be at the same potential as the medium for an accurate measurement. This is guaranteed when the connecting flange of the pipe is made of metal and a perfect electrical connection is established to the sensor through the fastening screws. In this case the medium, pipe and transmitter are connected with each other in the sense of a potential equalization. Figure 4-7 Reference potential in electrically conductive pipes In the case of internally electrically isolated pipes, the medium in the pipe must be applied to a reference potential by additional measures (e.g. by grounding rings). Grounding rings serve to establish the reference potential of the sensor in electrically isolated pipes. Figure 4-8 Reference potential in electrically isolated pipes by grounding rings Grounding rings are offered as accessories. Operating Instructions, 12/2010, A5E

20 Installing 4.3 Turning the local display 4.3 Turning the local display The local display can be turned in 90 steps to enable better reading in case of vertical installation or overhead assembly. 1. Switch off the power supply. 2. Release the catch on the lid of the electronics compartment with a 3 mm Allen key. 3. Unscrew the cover. 4. Carefully release the fastening hooks of the local display using a screwdriver or similar tool 5. Pull out the unit, turn it to the desired position and push it back in. 6. Screw the lid back on and mount the lid catch. 1 Fastening hooks Figure 4-9 Unlocking the fastening hooks on the local display 18 Operating Instructions, 12/2010, A5E

21 Installing 4.4 Transmitter installation 4.4 Transmitter installation Wall mounting with standard mounting plate 1. Fit the mounting plate on the transmitter using the mounting material provided 2. Mount transmitter with mounting plate on the wall. Figure 4-10 Standard mounting plate Note The standard mounting plate is only suitable for wall mounting. Operating Instructions, 12/2010, A5E

22 Installing 4.4 Transmitter installation Pipe or wall mounting with assembly bracket Pipe mounting 1. Mount the assembly bracket on the pipe using the fastening brackets 2. Fasten the transmitter with the two screws provided. Pipe mounting with assembly bracket Wall mounting 1. Fasten the assembly bracket to the back of the transmitter 2. Fasten the transmitter and assembly bracket to the wall Note The fastening brackets and nuts are not needed for wall mounting Wall mounting with assembly bracket 20 Operating Instructions, 12/2010, A5E

23 Connecting General Information This chapter describes how to wire up the device. Step 1 (Connecting power supply (Page 23)), step 2 (Connecting signal cables) and step 3 (Connecting terminal box and transmitter (Page 25)) must always be carried out. The chapter only describes wiring of devices with HART. In order to wire up devices with Profibus PA, refer to the Appendix: Magnetic current cable Terminal box for power supply and signal cables Potential equalization Signal cable Power supply Electrode cable Terminal box for magnetic current and electrode cables Figure 5-1 Overview, Electrical connections Operating Instructions, 12/2010, A5E

24 Connecting 5.1 General Information WARNING The pertinent regulations must be observed for electrical installation. Never install the device with the mains voltage switched on! Danger of electric shock! The electrodes and magnetic current cables may only be connected when the device is not connected to the power supply. Housing covers may only be unscrewed by qualified personnel when the housing is under voltage (power supply). Cable specifications Only use cables with at least the same degree of protection as the sensor to install the sensor. The cable length from the cable gland to the terminals must be kept as short as possible. Cable loops in the terminal box must be avoided. To guarantee the IP 67 degree of protection, use cables with the following external diameters: The permissible external diameter for auxiliary power and signal cable (large terminal box) of the standard device (7ME5034-xxxxx-xAA0) is 6 to 12 mm. Magnetic field current and electrode cable (small terminal box): Cable glands M16 x to 10 mm Cable glands 1/2" NPT 5 to 9 mm 1 2 Lid of terminal box Cable gland Figure 5-2 Example of lazing cables before connecting the cables See also Wiring devices with Profibus PA (Page 94) 22 Operating Instructions, 12/2010, A5E

25 Connecting 5.2 Step 1: Connecting power supply 5.2 Step 1: Connecting power supply CAUTION Only connect the device to the supply which matches the specifications on the rating plate. Connect the power supply by an easily accessible and appropriately labeled isolating device and fuse (max. 4 A) or an easily accessible circuit breaker (max. 4 A). Note Use cables with a cross section of at least 1.5 mm 2 and double or reinforced insulation for the power supply. Wiring guidelines 1. Release the catch on the lid of the terminal box using a 3 mm Allen key. 2. Unscrew the lid of the terminal box. 3. Push the supply cable through the cable glands up to the terminal strip. Lay the cable in a loop before the cable glands so that moisture does not get inside the terminal box. 4. Connect the cables according to the figure below Ground connection for signal cable shield Digital output 2 (relay) or digital input Digital output 1 (active/passive) Analog output (active) 4 to 20 ma or PROFIBUS Power supply: L/N for 100 to 230 V AC Terminal for PE conductor Figure 5-3 Connection diagram for power supply and signal cables Operating Instructions, 12/2010, A5E

26 Connecting 5.3 Step 2: Connecting signal cables 5.3 Step 2: Connecting signal cables CAUTION Lay the signal cables separately from cables with voltages > 60 V. Avoid laying signal cables close to large electrical installations or use - if possible - only shielded cables. Note In a wet environment, the signal cable for digital output 2 (terminals 3 and 4) must be isolated when the feed-in voltage is more than AC 16V / DC 35 V. Only use signal cables with twisted wire pairs. 1. Push the signal cable through the cable gland up to the terminal strip. Lay the cable in a loop before the cable glands so that moisture does not get inside the terminal box. 2. Connect the cables according to the figure above. 3. Fit end ferrules to fine-wire cables. 4. Tighten the cable gland and check strain relief. 5. Screw the lid to the housing and tighten it. You must not use any tools. The sealing ring must be clean and undamaged. 6. Mount the lid catch. 7. For transmitters in remote design, also connect the housing to the local potential equalization to which the appropriate sensor must also be connected. HART requirements The full HART 5.1 specification only applies when using shielded cables. Use signal cables with twisted wire pairs if the analog output and pulse/frequency output are used simultaneously and signals are transmitted in one cable. A load of at least 250 Ω must exist in the signal circuit (see also Technical data) for error free communication via the HART protocol. 24 Operating Instructions, 12/2010, A5E

27 Connecting 5.4 Step 3: Connecting terminal box and transmitter 5.4 Step 3: Connecting terminal box and transmitter WARNING The transducer may only be connected to measuring sensor for alternating fields SITRANS F M 911/E. The magnetic circuit carries dangerous mains voltage. As long as the device is under voltage, the lid of the housing on the sensor connection area may only be opened by qualified personnel. Before removing the terminal cover, the auxiliary power must be switched off from all poles. Following installation, the terminal cover must be screwed back on again. Operating Instructions, 12/2010, A5E

28 Connecting 5.4 Step 3: Connecting terminal box and transmitter Connecting The sensor cable shield is connected to the transmitter and sensor as follows: 1. Bend the cable shield back over the clamping piece of the cable gland. 2. Push the clamping piece with the sensor cable into the threaded bush of the cable gland turning it slightly to the right. 3. Tighten the lock nut on the threaded bushing until the cable is connected tightly (IP67) 1 2 Electrode cable Magnetic current cable Figure 5-4 Signal transmission from the sensor to the transmitter 26 Operating Instructions, 12/2010, A5E

29 Connecting 5.4 Step 3: Connecting terminal box and transmitter Sensor connection Sensor Coil cable Magnetic field current 1 Magnetic field current 2 PE Brown White Green/Yellow SmartPlug connect Supply (-6V) Ground (0V) Supply (+6V) Green Red Blue 1 2 Electrode cable Magnetic current cable Electrode connect 23 Electr. 1 (EL 1) 24 Electr. 2 (EL 2) Reference coil 55 Ref Ref. 2 Figure 5-5 Connection diagram for power supply and signal cables on transmitter Brown White Black Yellow Note Transmitter and sensor have the same terminal names, the cables must be connected 1:1. With sensors with IP68 degree of protection, the cable colors or the identification tag on the sensor cables must be observed. Preparing the cables Prepare the cable before connection as shown below mm mm mm Connector sleeve Braided screen Figure 5-6 Preparation of the electrode and magnetic field current cable Operating Instructions, 12/2010, A5E

30 Connecting 5.4 Step 3: Connecting terminal box and transmitter Lock nut Clamp Cable shield Threaded bush Figure 5-7 Remote connection Terminal Designation Cable color for sensors with 5 Magnetic field current 1 brown IP68 degree of protection 6 Magnetic field current white 7 Potential equalization/pe green-yellow 29 SmartPLUG supply (-5 V) green 22 Measuring ground red 23 Electrode 1 brown 24 Electrode 2 white 30 SmartPLUG-supply (+5 V) blue 55 Reference voltage black 66 Reference voltage yellow Magnetic field current cable Electrode cable To guarantee the IP67 degree of protection, please use cables with the following external diameters: Cable glands M16 x to 10 mm Cable glands M20 x to 12 mm Cable glands 1/2" NPT 5 to 9 mm The magnetic power cable must be shielded and fitted with a wire gauge of at least 3 x 1.0 mm 2. For the TRANSMAG 2 (7ME5034), the cable must be of a suitable dimension for the connected mains voltage. The protective conductor must be marked green-yellow, and must be connected such that it is the last cable to come loose when pulled. The electrode cable (including the SmartPLUG supply voltage) must also be shielded and should have a wire gauge of 7 x 0.5 mm 2, (e.g. LIYCY). 28 Operating Instructions, 12/2010, A5E

31 Commissioning 6 WARNING Certain parts inside the device carry dangerous high voltage. The housing must be closed and grounded before switching the device on. WARNING The sensor connected to this device can be operated with high pressure and corrosive media. Therefore improper handling of the device can lead to serious injuries and/or considerable material damage. Commisioning the device Switch on the power supply. The device runs a self-test which lasts about 30 seconds. If the sensor has a SmartPLUG, the factory data of the sensor as well as essential customerspecific tag data (range, units for flow and totalizers, flow limit values, medium density, operating language) are transferred to the transmitter the first time you switch it on. The tag data can then be changed permanently in the transmitter. These data are not read in again until a new sensor is connected. Note Gas/air in the line If there is gas/air in the measuring tube or in the pipeline after assembly, a flashing "F" appears at the top of the first line in the display. The flowing medium removes the gas/air occlusions from the tag and the flow can be measured without interference after a few minutes. 6.1 Operating TRANSMAG 2 TRANSMAG 2 can optionally be operated in the following ways: via the local display via HART or Profibus with a PC/laptop and SIMATIC PDM software Note The following explains how to operate the device via the local display. Operating Instructions, 12/2010, A5E

32 Commissioning 6.1 Operating TRANSMAG 2 Operation via local display The device is operated with the optical elements on the local display. The elements are actuated by touching the glass panel above the appropriate operating element. The text display above the operating elements gives a menu-guided operation of the individual device functions/parameters. Figure 6-1 Local display of the Note Operation does not require opening of the device. This means that the high degree of protection of IP67 is guaranteed at all times. Navigating the menu structure The available device functions and parameters are shown in the second line of the display. You can select them there with the and operating elements. You can scroll in the selected device function or setting level of the parameters (Enter function) with. It is possible to exit the selected function or setting level to the level above with. The currently valid setting appears after selecting the setting level of a parameter. The programmable value flashes in the second line of the display when programming is enabled. You can change the parameter setting in this position. You have to decide between the following types of input to enter data: Direct numeric input Input from given table 30 Operating Instructions, 12/2010, A5E

33 Commissioning 6.1 Operating TRANSMAG 2 In the numerical input, the and operating elements have the function of a cursor control. The selected digit flashes. You can now set the desired digit or move the point to the right or left with the and operating elements. Digits are input with carry over to the next highest place. After selecting the last digit you terminate the input by pressing the operating element. The entered value is accepted if it is within the permissible input range. In this case, the user guidance returns to the selection menu for the parameters of the group concerned. If the entered value is rejected, an error message briefly appears on the display and then the previous setting. You can then change it again. Note If the and operating elements are kept actuated (with your finger continuously on the glass panel) the numeric value or setting option is changed continuously when using the tabular selection. A numeric input carries over to the next highest position. If you want to prevent an accidentally changed setting from becoming active, you can exit the menu item by pressing the operating element several times (return to the operating level above). See also The exact structure of the operating menu is explained in the appendix Parameters (Page 81) and an overview of the function groups of the menu is offered in chapter: Functions (Page 37). Operating via BUS communication The device is integrated into the system as shown below: 230 up to 600 HARTcommunicator or Coupling module RS-232-C PC/ laptop Figure 6-2 System integration via HART Operating Instructions, 12/2010, A5E

34 Commissioning 6.2 Write protection Line termination T DP/PA coupler or link PA T DP Power supply FG HMI module (control and display) Figure 6-3 max. 31 other devices System integration via Profibus PC/laptop with PROFIBUS-Master System requirements (SIMATIC PDM) The PC must have the following minimum equipment to operate via SIMATIC PDM: Hardware: Pentium processor or higher At least 32 MB RAM Hard disk with at least 110 MB free capacity Monitor: VGA standard or compatible with MS-Windows Keyboard and (optional) mouse CD-ROM drive Interface CP5411 A2 or CP5511 or CP5611 Software: Windows98, Windows NT4.0 or Windows XP SIMATIC PDM V5.01 or higher (SIMATIC STEP 7 OEM included) Note Operation of SIMATIC PDM is supported by integrated help functions. 6.2 Write protection The local display can be write-protected to prevent unauthorized manipulation by entering a freely selectable, personal code number. In this case the device functions and parameters can only be changed after entering this code. You define the personal code number in the "6.2 Customer code" menu item. 32 Operating Instructions, 12/2010, A5E

35 Commissioning 6.3 Language and illumination If you actuate the and operating elements in the parameter setting level, the display prompts you to enter the code. You can also enter the code number in the "6.1 Enter Code" menu item. The programming is disabled again: after returning to display mode about 10 minutes after actuating an operating element after entering any number not the same as the code number in the "6.1 Enter Code" menu item Note With code = 0 (factory setting), the programming is always enabled. You can always disable the operation by HART communication. 6.3 Language and illumination The desired operating language can be set in the control and display unit in menu item "1.1.1 Language". The background illumination of the LCD is switched on automatically the first time an operating element is actuated. The illumination ceases about 10 minutes after last actuating an operating element. If the display is constantly lit, you can set this using the menu item "1.1.5 Illumination". 6.4 Operating examples Example 1: Changing engineering unit In the following example, the engineering unit for the current flow value is changed from m 3 /h to l/min. The operating path to be executed is shown semibold in the diagram below. The operating elements to be actuated are specified and the individual operating steps numbered consecutively. The following display appears after completing the data input (8th operating step) 3.1. Flow 1 Engr. Unit You return to the initial position by actuating the operating element three times. Operating Instructions, 12/2010, A5E

36 Commissioning 6.4 Operating examples Function group 1 display m3/h 5680 m3 2 Function group 2 Diagnostics Function group 3 Measuring functions Measuring functions 1 Flow Flow 1 Engr. Unit Engr. Unit m 3 /h 3x Engr. Unit l/min 8 3. Measuring functions 2 Totalizer forw. 3. Measuring functions 3 Totalizer reverse 3.3. Totalizer reverse 1 Set reverse Setting Cancel 3. Measuring functions 4 Totalizer net 3.4. Totalizer net 1 Set net Set net Cancel 3.4. Totalizer net 2 Engr. Unit Engr. Unit l Figure 6-4 Setting current flow unit 34 Operating Instructions, 12/2010, A5E

37 Commissioning 6.4 Operating examples Example 2: Changing pulse rate In the following example the pulse rate is changed from 1 pulse per liter to 200 pulses per liter. 1. Navigate the menu and select menu item "Pulse rate". 4.2 Digit.output1 3 Pulse rate Note See for information on how to navigate the menu. 1. Enable the programming by pressing once. The unit in the second display line flashes Unit lmp/l 1. Press once. Digit 1 flashes Pulse rate lmp./unit 1. Change the digit from 1 to 2 by pressing once Pulse rate lmp./unit 1. Select the decimal point by pressing once Pulse rate lmp./unit 1. Move the decimal point two places to the right by pressing the twice Pulse rate lmp./unit 1. Terminate the input by pressing three times 4.2 Digit.output1 3 Pulse rate Operating Instructions, 12/2010, A5E

38 Commissioning 6.4 Operating examples The currently valid setting appears in the display P D i g i t. o u t p u t 1 u l s e r a t e Enable the programming. The unit in the second display line flashes U n i t I mp/ l 1 x 1 x Digit 1 flashes P u l s e I. mp / r a t e U n i t Change the digit from 1 to 2 with the operating element P x u l s e r a t e I. mp / U n i t Select the point with the operating element P u l s e I 1 x. mp / r a t e U n i t Move the point two places to the right by pressing the operating element twice P u l s e I 2 x. mp / r a t e U n i t 3 x Select the last position of the number with and terminate the input by pressing the operating element (Enter function) D i g i t. o u t p u t 1 3 P u l s e r a t e Figure 6-5 Fig_05_06 36 Operating Instructions, 12/2010, A5E

39 Functions Menu structure Operation is based on a hierarchically structured operating concept, i.e. all functions/parameters are grouped logically and carry a menu code. The first (top) level is the main menu. You can select one of the following function groups: 1. Display 2. Diagnosis 3. Measuring functions 4. Device inputs and outputs 5. Identification 6. Service The individual functions and parameters for further groups are combined under these main groups. 7.2 Function Group Display The main display (multi display) appears after restarting the transmitter. Display parameters (Menu item 1.1) Within the menu you have the following display or setting options: Language, menu item Line 1, menu item (definition of measured value) Line 2, menu item (definition of measured value) Display of flow value, menu item (only for line 2) Illumination, menu item (display test) Multi display (menu item 1.2) Simultaneous display of two measuring variables Flow (menu item 1.3) Display of current flow Operating Instructions, 12/2010, A5E

40 Functions 7.3 Function Group Diagnostics Totalizer (menu item 1.4) Display of total flow This menu displays all totalizers which can all be reset together. These are: Totalizer forwards, menu item Totalizer reverse, menu item Totalizer net, menu item Set (all), menu item Note The totalizers show the total flow volume since starting the measurement. Use the menu items 3.2, 3.3 and 3.4 for separate setting and resetting of the units. The totalizer is restarted when it overruns. Note The value range of the totalizers in PROFIBUS and HART communication is principally m 3 to m 3. However, since the value range of the local display is limited to , the display stays at when this range is exceeded, while totalizing continues internally. Flow velocity (menu item 1.5) Display of current measured value in m/s Frequency (menu item 1.6) Display of current measured value in Hz Analog Out1,2 (menu item 1.7) Display of current measured value in ma 7.3 Function Group Diagnostics Device status (Menu item 2.1) During normal operation, test routines are run continuously. The display "OK" appears in the case of error-free operation after selecting menu item 2.1 (device status). An error message is displayed in clear text in the event of an error. 38 Operating Instructions, 12/2010, A5E

41 Functions 7.3 Function Group Diagnostics The possible error messages are listed in the table below and the assignment of the error messages to the individual outputs specified. The error message can only be output via the digital outputs 1 and 2 and the analog output if configured accordingly (selection of Alarm function for the digital outputs or Failure signal for the analog output) (see menu items 4.1.2, and 4.3.1). A flashing "F" process related error at the top right of the display indicates a process error. A flashing "D" at the top right of the display indicates a device error. Should errors in groups F and D occur at the same time, only D will flash. In communication via PROFIBUS, the diagnostic message displayed here is also reported under the extended diagnosis with the diagnostic bit "EXTENSION_AVAILABLE". Table 7-1 Error messages Error message Flashing indication in display menu Error is Signaled at the analog output Error is signaled at digital output 1 and 2 Measurement module failure F - - x Calibration failure measurement F - - x module Simulation is running F - - x Flow measurement unreliable F - - x Calibration is running F x x x Tube empty F x x x Measuring range overflow > 110 % F x x x COM Module failure D Memory failure D x x x Software failure D x x x Sensor failure D x x x Flow measurement disturbed D x x x PROFIBUS For texts with more than 16 characters, the marks and in the first and last segment of the device display respectively indicate that there are other characters to the left and/or right of the displayed text. You can display these by actuating the and operating elements. Electrode check (Menu item 2.2) The electrode DC voltage is scanned cyclically when this menu item has been selected. This detects e.g. deposits on the electrodes. If there is a fault or an error, the alarm signal Flow measurement unreliable is triggered. Note This function requires a sensor with SmartPLUG. Operating Instructions, 12/2010, A5E

42 Functions 7.3 Function Group Diagnostics Empty Pipe Det. (menu item 2.3) The function checks whether the electrodes of the sensor are wetted by the medium. To do this, you have to determine the monitoring interval. If the electrodes have no contact with the medium, the alarm signal "Tube empty" is triggered through the digital outputs. This alarm is also triggered in the case of an insulating coating on the electrodes. WARNING This message does not mean that the tube has actually run empty. Therefore you must make sure that the pipeline is actually empty before your remove the tube! Note Response threshold and timing behavior of the "immersion check" function depend on the conductivity of the medium and the nominal width and cladding of the sensor (min 50μS/cm). The switching threshold can be adapted to these conditions, if necessary (see menu item 6.7.5). Device test (Menu item 2.4) The device test comprises the following test components: Self test, menu item The self test routines are inserted in the current measurements and are completed after about 60 seconds. If there is no error, "OK" is displayed, otherwise "not OK". The type of error can then be read out in the menu item "2.1 Device status". Display test, menu item The LCD is checked with this menu item. The display is initially dark for approx. 5 seconds and then bright for approx. 5 seconds. Simulation flow (Menu item 2.5.1) The flow can be simulated in a range from ±110 %. Here you also have the possibility of checking displays, totalizers, limit values and outputs in certain measuring ranges. The running simulation is indicated by a flashing F. It ends at the end of a previously set period or after entering the End parameter in this menu item. Simulation outputs (Menu item 2.5.2, 2.5.3, 2.5.4) With this function you can check the signal circuits of the analog output, the digital outputs 1 and 2 as well as the flow. In the individual menu items, you select the value to be simulated with the and operating elements. You activate the setting by confirming the selected value with the operating element. The running simulation is indicated by a flashing F. You end simulation of the output signal by actuating the operating element (exit the menu item). Digital output 1 must be configured for the "Alarm" function for simulation of the alarm signal (setting in the menu item "4.2.1 Function"). 40 Operating Instructions, 12/2010, A5E

43 Functions 7.4 Function Group Measuring Functions 7.4 Function Group Measuring Functions Flow (Menu item 3.1) You have the following setting options in this menu: Engineering unit, menu item This function offers you the possibility of choosing between units of volume flow (volume unit per time unit) or mass flow (mass unit per time). If a unit of mass is selected, it is mandatory to enter the density of the medium in menu item Flow Upper Range Value (URV), menu item The full scale value is set depending on the nominal width of the sensor and the valid speed range ( m/s). The start of scale value is always 0 (zero). Note Devices with PROFIBUS PA Although the profile parameter for the start of scale value (0%) can always be written by acyclic communication, values not equal to 0 are rejected. The output scale does not appear in the local operating unit. It is always automatically set to be identical with measuring scale, i.e. the profile parameters start / end of the output scale are automatically set to 0 or "URV". Other values are rejected in acyclic PROFIBUS communication. The set URV only has an influence on the percentage defined values such as "flow in %", hysteresis and the digital output 1. Measured values outside this range are also reported by PROFIBUS as valid measured values providing they are within the sensor limits. The sensor limits for flow depend on the nominal width and correspond to a flow velocity range of about -13 m/s to +13 m/s. Measured values outside the sensor limits are displayed but are no longer within the specified range; "uncertain, nonspecific, low limited" or "uncertain, nonspecific, high limited" is then reported as a measured value status. Operating Instructions, 12/2010, A5E

44 Functions 7.4 Function Group Measuring Functions Limits, menu item 3.1.3, consisting of: Low Alarm Limit, menu item and High Alarm Limit, menu item The input is made in absolute values within the sensor limits (depending on the nominal width, corresponding to -13 m/s to +13 m/s). Alarm limits of min. 10% and max. 90% of the URV are set at the factory. Exceeding or dropping below these limit values are signaled at digital output 1 or 2 if the function of these outputs is configured appropriately (menu items and 4.3.1). In PROFIBUS communication, these events are reported by the limit bits in the measured value status. Note Devices with PROFIBUS PA The profile parameters for the "Low Warning Limit" and "High Warning Limit", can be set independently of the alarm limits by acyclic PROFIBUS communication. They do not appear in the local operating unit. Exceeding of the warning limits is only signaled by PROFIBUS communication. Hysteresis, menu item The limit values (menu items and ) can have a hysteresis added to prevent "fluttering" of the switching output Measured variable Limit alarm Time Hysteresis - limit max. Hysteresis - limit min. Figure 7-1 Limit value message and hysteresis 42 Operating Instructions, 12/2010, A5E

45 Functions 7.4 Function Group Measuring Functions Density, menu item You must specify unit and density here. The volume flow qv is converted to mass flow qm automatically using the formula (qm = qv * r). Direction, menu item This item is divided into: Flow direction, menu item Measuring direction, Menu item Hysteresis, Menu item The flow direction ( ) is preset at the factory and indicated by the arrow on the sensor. If the flow direction does not match the direction of the arrow it must be adapted in this menu item. Figure 7-2 Setting Forw. and Rev. (left) and setting Forw. only (right) 2. With measuring direction ( ) it is possible to detect flow in forward and backward direction and to pass on the appropriate signal proportionally to the analog or digital output. In "forwards" parameterization, only signals in this direction are output or accumulated internally. Example 1: Hysteresis = 0% 0 b a Operating Instructions, 12/2010, A5E

46 Functions 7.4 Function Group Measuring Functions Example 2: Hysteresis = 0% a Figure 7-3 Reverse Forwards b Flow in % of range Hysteresis flow direction 1. Hysteresis ( ). The limit values (menu items and ) can have a hysteresis added to prevent "fluttering" of the switching output. This setting is made in % of the set full scale value in the menu item "Hysteresis". If, for example, the hysteresis is 1 %, the relay contact does not switch until a flow of -1% of the full scale value and returns to the original position at a flow of +1% of the full scale value. Table 7-2 Switching status of the relay for selected signal type - Contact closes: a Relay contact closed b Relay contact open - Contact opens: a Relay contact open Low flow cut, menu item b Relay contact closed This parameter determines the switching point for low flow cut-off. The low flow cut prevents flow being measured in the lower range (e.g. fluctuating liquid columns at a standstill). The low flow cut-off affects: display, totalizers, analog output and pulse frequency output as well as HART and PROFIBUS communication. In devices with HART communication, the value of the low flow is related percentagewise to the upper range value (menu item 3.1.2). In devices with PROFIBUS communication, the absolute value must be entered in the selected unit of flow (menu item 3.1.1). Filter time constant, menu item The jump response can be suppressed in this menu item. This may be necessary depending on the application, for example in the case of fast changing flows to keep the display value or analog value stable. 44 Operating Instructions, 12/2010, A5E

47 Functions 7.4 Function Group Measuring Functions Noise Suppress, menu item This function serves to eliminate temporary, application-related interference within a fixed time frame. Every measured value within a measuring pulse is compared with the previously determined value. If it is outside the tolerance band set under menu item (the specified % value refers to the set full scale value), the device operates with a filter time constant of 10 s. This applies for the suppress time set in menu item If a greater deviation occurs during this time, the time starts again from the beginning. If a disturbed signal is applied continuously, the device remains set to the greater filter time constant until the unattenuated measured values are back within the selected tolerance band. The device switches back to normal mode at the end of time "t" after the last detected deviation. Slurry mode, menu item For media with high solids content, magnetically conductive solids or air locks, the stability of the measured values can be significantly improved with this setting, while the reaction speed remains the same when the flow is altered. If necessary, the stability of the measured value can be further increased using the "Filter time constant" (menu item ) or "Error blanking" functions, although this will in turn reduce the measuring dynamics. + - } t t t Un-attenuated measuring variable Time Tolerance band t = suppress time Operating Instructions, 12/2010, A5E

48 Functions 7.4 Function Group Measuring Functions 1 2 Flow in % with filter time constant Time Effect of a noise signal filter (example) Total. forwards (Menu item 3.2) You have the following setting options in this menu: Set, menu item In this menu you can reset the forwards totalizer to zero and restart if necessary. If the totalizer overruns the optical display of the totalizer stops at " " but the device continues counting internally. You have to set a greater unit to be able to read the current totalizer reading again. You have the following individual setting options: Reset+Stop: the totalizer is set to 0 and held. Reset+Start: the totalizer is set to 0 and restarted 1,2 Totalize: the totalizer is started 3 Unit, menu item With this function you can select physical units or switch from one unit to another. In the latter case the device converts the previous totalizer reading into the new unit. Alarm limit, menu item Here you can set all values from 0 to You can assign reaching or exceeding this limit value as a signal to a digital output. 46 Operating Instructions, 12/2010, A5E

49 Functions 7.4 Function Group Measuring Functions Total. reverse (Menu item 3.3) You have the following setting options in this menu: Set, menu item In this menu you can reset the reverse totalizer to zero and restart if necessary. If the totalizer overruns the optical display of the totalizer stops at " " but the device continues counting internally. You have to set a greater unit to be able to read the current totalizer reading again. You have the following individual setting options: Reset+Stop: the totalizer is set to 0 and held. Reset+Start: the totalizer is set to 0 and restarted 1,2 Totalize: the totalizer is started 3 Unit, menu item With this function you can select physical units or switch from one unit to another. In the latter case the device converts the previous totalizer reading into the new unit. Alarm limit, menu item Here you can set all values from 0 to You can assign reaching or exceeding this limit value as a signal to a digital output. Totalizer net (Menu item 3.4) You have the following setting options in this menu: Set, menu item In this menu you can reset the totalizer net to zero and restart if necessary. The net totalizer forms the difference (error sum) between forward and backward flow. If the totalizer overruns the optical display of the totalizer stops at " " but the device continues counting internally. You have to set a greater unit to be able to read the current totalizer reading again. You have the following individual setting options: Reset+Stop: the totalizer is set to 0 and held. Reset+Start: the totalizer is set to 0 and restarted 1,2 Totalize: the totalizer is started 3 Unit, menu item With this function you can select physical units or switch from one unit to another. In the latter case the device converts the previous totalizer reading into the new unit. Low Alarm Limit value, menu item Here you can set all values from -1 to You can assign reaching or exceeding this limit value as a signal to a digital output. High Alarm Limit, menu item Here you can set all values from 1 to You can assign reaching or exceeding this limit value as a signal to a digital output. Hysteresis, menu item The limit values (menu items and 3.4.4) can have a hysteresis added to prevent "fluttering" of the switching output. Operating Instructions, 12/2010, A5E

50 Functions 7.5 Function Group Device Outputs 7.5 Function Group Device Outputs Analog out (Menu item 4.1) This menu only appears in devices with a 20 ma output (7ME5034-0xxxx and -2xxxx). The following settings are possible: Current limiting, menu item The upper current limit for the output signal is determined in this menu item ma 20.0 ma Current Parameter range Measured value Figure 7-4 Current limiting 0 Failure signal, menu item In the event of a fault, e.g. a device error or measuring error due to entrapment of air, the analog output shows a predefined current. The following settings are possible: 3.6 ma 22 ma 24 ma Hold for a defined time ( seconds), then 3.6 ma Hold permanently With the "Hold 5 s" setting you can bypass temporary faults (e.g. air entrapment in the medium) for up to about 5 s without the analog signal outputting an error message. The same applies accordingly for "Hold 20 s", "Hold 40 s" etc. The last valid measured value is output during the fault. If the fault lasts less than 5 s the current measured value is output at the end of the fault. If the fault persists, the output signal is set to 3.6 ma. In the "Hold permanently" setting the last valid value is output until the fault is eliminated. In the current range between 0 and 20 ma, the 3.6 ma failure signal or "Stop" is not recommended; in this case, the setting 22 ma or 24 ma must be selected. 48 Operating Instructions, 12/2010, A5E

51 Functions 7.5 Function Group Device Outputs Split mode (combined counter), menu item The Split mode is activated when Active is selected. The "Split value" divides the measuring range (URV) set in menu item The split value is only effective when it is smaller than the full-scale value (upper range value, URV). When Split mode is activated, if there is a current flow value in the lower sub-domain (0 to split value), this sub-domain is shown in a linear way on the set current range (0-20 ma or 4-20 ma), i.e. a current of 20 ma corresponds to the split value. This status can be indicated on digital outputs 1 or 2, if the "Split value active" function has been set (menu and 4.3.1) If the current flow value is within the upper sub-domain (split value to full-scale value), the range 0 to URV is shown in a linear way on the set current range as for the inactive Split mode. 20mA 4mA 0 1 Output current 2 Split value 3 URV 4 Flow Figure 7-5 Split mode in domain ma Operating Instructions, 12/2010, A5E

52 Functions 7.5 Function Group Device Outputs Profibus (Menu item 4.1) This menu only appears in PROFIBUS devices. (7ME xxxx). This menu gives you the following setting options: Bus address, menu item The address 126 (factory setting) is reserved for newly connected devices and must be changed to a smaller value at the latest after commissioning on the bus. A value between 30 and 125 is recommended because addresses below 30 are only assigned for bus masters as a rule. An address < 126 is only addressable when no cyclic communication is taking place and all acyclic connections are closed. With the PROFIBUS variable "factory_reset = 2712" the address can be reset to the factory setting 126. Note Each address may only be assigned for one device on the connected bus! Ident No., menu item The device profile for the cyclic data traffic can be selected here. You have the following options: Profile-specific (=Ident No. 0x9740) means: Restricted functions; i.e. only cyclic parameters according to profile 3.0 (flow and totalizer net). Manufacturer-specific (= Ident No. 0x80C4) means: Full functions, i.e. cyclic parameters according to profile 3.0 and additional manufacturer-specific parameters (e.g. totalizer forwards, totalizer reverse). Note The connected PROFIBUS master must be configured with a device database file (GSD) according to the set ID No. See also Device Database File (GSD) (Page 103) 50 Operating Instructions, 12/2010, A5E

53 Functions 7.5 Function Group Device Outputs Digital output 1 (Menu item 4.2) You have the following setting options in this menu: Function, menu item You can configure digital output 1 as a pulse, frequency, alarm or status output When "Split value active" is selected, the output is active when the current level of the flow value is within the lower sub domain 0 to "Split value"; the output current is then scaled to the 0 to "Split value" range. If the flow value exceeds this sub-domain, the output current is scaled to the 0 to URV range. Signal type, menu item You can configure different signal types for the output signal of digital output 1: Active: The device-internal voltage is used (+24 V). Passive: External supply required. T 1 24 V 170 5(+) I T 2 U (-) 5(+) I T 2 6 (-) U Active Passive Counter External supply max. DC 30 V Figure 7-6 Active and passive signals You can generate signals with positive and negative logic (positive and negative pulses). The figure below illustrates the setting options. Operating Instructions, 12/2010, A5E

54 Functions 7.5 Function Group Device Outputs Pulse rate, menu item The pulse valence indicates how many pulses are output per unit of volume or mass. When the "Pulse" function is selected, you have to set the number of pulses per unit of volume or mass. Pulse width, menu item You can determine the pulse/pause ratio of the pulse output with the pulse width. The pulse width can be set in a range from 0.1 to 2000 ms. A maximum pulse width is calculated in relation to the set full scale value and the set pulse valence. The maximum pulse frequency is 5 khz. U[V] U[V] 7 I[mA] 7 I[mA] Active-positive Active-negative Passive-positive Passive-negative Transistor T2 conductive Transistor T2 disabled Time Figure 7-7 Signal types for digital output 1 Full scale frequency, menu item The frequency is permanently assigned to the flow. The pulse/pause ratio is constant 1:1. If the "Full scale frequency" function is selected, the frequency is set in the range from Hz. 52 Operating Instructions, 12/2010, A5E

55 Functions 7.5 Function Group Device Outputs Digital output 2 (Menu item 4.3) The digital output 2 is available in device variants with the MLFB-No. 7ME5034-0xxxx-xxxx (Hart communication and digital output). You have the following setting options in this menu: Function, menu item You can configure the digital output 2 (relay contact) as an alarm or status output. When "Split value active" is selected, the output is active when the current level of the flow value is within the lower sub-domain 0 to "Split value". In this case the output current is scaled to the 0 to "Split value" range. If the flow value exceeds this sub-domain, the output current is scaled to the 0 to URV range. Note The relay contact is open in the "no function" setting. Signal type, menu item You can set the function of the relay as follows in this menu item: 1. When the relay need to be closed in the event of an alarm: Flow in forward direction Limit value message 2. When the relay need to be open in the event of an alarm: Flow in forward direction Limit value message Table 7-3 Relay status Setting 1. Contact closes 2. Contact opens No alarm Reverse flow No limit signalling Alarm message Forward flow Limit signalling Operating Instructions, 12/2010, A5E

56 Functions 7.5 Function Group Device Outputs Electronic fuse External supply Figure 7-8 Digital output 2 CAUTION At high inductive loads, the digital output must be protected against transient overvoltage with a suitable external recovery diode. The electronic fuse is tripped in the event of overloading. The recovery time of the fuse is a few minutes. The relay contact is open in the no-load state. 54 Operating Instructions, 12/2010, A5E

57 Functions 7.6 Function Group Identification Digital input (Menu item 4.3) The digital input is available with the device variant 7ME5034-2xxxx (Hart communication and digital input). You have the following setting options in this menu: Function, menu item By applying an external power supply, you can create a switching input, for example using a switch (see also Figure 5-12). You have the following possibilities depending on the configuration: Set the measured value to "0" (all outputs and displays are reset to zero and the totalizers are stopped Reset the forwards totalizer Reset the reverse totalizer Reset the net totalizer Reset all totalizers elektronische Sicherung + ext. Schalter 3 5V ext. Versorgung max. 30 V 1 2 Electronic fuse Ri 3k External switch 3 External supply V (max. 30 V) Figure 7-9 Circuit diagram of digital input Signal type, menu item You can determine the signal type (high-active) with this Function Group Identification Funct. unit (Menu item 5.1) You can call or enter device-specific or tag-related data in this menu. You have the following options: Operating Instructions, 12/2010, A5E

58 Functions 7.6 Function Group Identification TAG (tag number), menu item Tag description, menu item Message, menu item You can enter tag-specific data in these menu items. The and operating elements take on the function of a cursor control here. The numbers, letters and text characters are selected with the and operating elements. If no text is stored, the end of text character flashes when opening these menu items. Actuation of the and operating elements moves the end of text character one position to the right and a character can be selected from the character set. The following characters are available: Output position ä,à...é...ß...ü < a-z < blank > 0-9 > A-Z > < >.,-:/* The selected character is transferred by pressing the operating element and the end of text character flashes again. Another character can be selected with the and operating elements. Text input is ended by actuating the operating element when the end of text character flashes. The number of characters is limited to: Table 7-4 Max. number of characters PROFIBUS HART Tag number (TAG): 32 characters 8 characters Tag name: 32 characters 16 characters Tag message 32 characters 32 characters The Hart communication transmits only capital letters. For texts with more than 16 characters, the marks and in the first and last segment of the device display respectively indicate that there are other characters to the left and/or right of the displayed text. You delete text by selecting the end of text character from the character set with the and operating elements and then actuating the operating element. All inputs to the right of the end of text character are then deleted. Note When the and operating elements are actuated continuously (your finger stays on the glass panel), the characters are scrolled automatically. 56 Operating Instructions, 12/2010, A5E

59 Functions 7.7 Function Group Service Manufacturer data, menu item 5.2 You can read out the serial number, order number and software version of the device in the individual menu items. The serial number and the order number of the device electronics are always displayed; in case of replaced electronics the latter is different from that of the device rating plate. Nominal width, menu item In this menu item you can set the nominal width in older generations of sensors manually if no SmartPLUG data are available. When you have selected "Probe", you must enter the interior diameter of the surrounding tube in "Diameter". 7.7 Function Group Service Enter Code (menu item 6.1) You can disable the control and display unit with a personal, freely selectable code number to prevent programming of the device by unauthorized persons. By entering the appropriate code number in this menu item, the programming is enabled and you can change the device settings. Factory set code "0" Customer code (see menu item 6.2 "Code change") Note If you actuate one of the or operating elements in the setting level of the parameter, you are automatically prompted to enter the code in the device display. The programming is disabled after returning to the display mode. The programming can also be disabled by entering any number which does not match the actual customer code in this menu item. After input of 3333 the fixed personal code is briefly displayed (help function as reminder). Customer code (Menu item 6.2) You can change the personal code number in this menu item. The code is factory set to 0. The menu item is only accessible after entering the personal code even when programming has already been enabled. Note Programming is always enabled when the code = 0. Operating Instructions, 12/2010, A5E

60 Functions 7.7 Function Group Service Service code (Menu item 6.3) The calibration data of the device are protected by a special code (factory code). The appropriate menu items are only available after entering this factory code. Reset (Menu item 6.4) Here you can perform a "warm start" of the controller. This retains all saved units, but the volume totalizer is reset to zero. Control values (Menu item 6.5) These display values are for trained service personnel, since they are device-internal data mainly for error diagnosis. These include: Magnet voltage Um, Uref, menu item Signal voltage Usig, menu item Electrode voltage Uel1, menu item Electrode voltage Uel2, menu item Current flow in % of the set full scale value, menu item Measuring frequency, menu item Self test, menu item Service information, menu item Digital input, menu item Zero Trim (Menu item 6.6) This function is divided into: Zero flow correction, menu item This menu item serves to adapt the local hydraulic conditions. The zero point has a speed value of -1 to +1 m/s added. This setting is undone by entering "0". Start correction, menu item This automatically determines the hydraulic zero point. This value is visible in menu item and can be adapted there, if necessary, or undone by entering "0". 58 Operating Instructions, 12/2010, A5E

61 Functions 7.7 Function Group Service Trim param. (menu item 6.7) You have the following setting options in this menu: Calibration factor, menu item Due to the local hydraulic conditions, any error related to the full scale value is corrected in this menu item. The value to be set here corresponds to a multiplicator of the measured value. An absolutely correctly set zero point is the prerequisite for proper functioning. CFH, menu item This is a factory determined hydraulic calibration value at a flow of 1 m/s. This value is automatically taken from the SmartPLUG of the measuring sensor. For older measuring sensors without a SmartPLUG, the value must be transferred manually from the nameplate. CFR, menu item This is a calibration value for the reference inductor in the measuring sensor calculated in the factory. This value is automatically adopted by the SmartPLUG. ZPH, menu item This is a factory-determined hydraulic calibration value at a flow of 0 m/s. This value is automatically taken from the SmartPLUG of the measuring sensor. For older measuring sensors without a SmartPLUG, the value must be transferred manually from the nameplate. Excitation frequency, menu item This setting option depends on the type or the nominal width of the sensor or the probes. Signal Transmitter Sensor Nominal width Magnet frequency (=mains frequency TRANSMAG 2 911/E Standard (all) Bipolar prepulse f/5 applications 911/E Rapid applications (all) Bipolar f/3 911/E up to 1995 DN 150 Unipolar f/6 Immersion check, menu item The "Tube empty" detection depends basically on the conductivity of the medium. The switching threshold is set to a typical value. Adjustment may be necessary in special cases. Here you have to determine the current internal measured values for electrodes 1 and 2 for a filled and empty measuring tube under the menu items Act.Value El1 and Act.Value El2. The switching threshold of the immersion check should be set under menu item Threshold to about midway between these two values. Operating Instructions, 12/2010, A5E

62 Functions 7.7 Function Group Service 60 Operating Instructions, 12/2010, A5E

63 Service and Maintenance Maintenance The device is maintenance-free, however, a periodic inspection according pertinent directives and regulations must be carried out. An inspection can include check of: Ambient conditions Seal integrity of the process connections, cable entries, and cover screws Reliability of power supply, lightning protection, and grounds 8.2 Cleaning Use only mild cleaning agent to clean the transmitter. "Aggressive" agents such as hydrochloric acid (even diluted), alcohol or abrasive media may not be used. 8.3 Changing fuses WARNING Disconnect the device from the mains at all poles before opening it. The fuses may only be changed by qualified personnel. The device fuse of the transmitter is located on the power supply board. The device fuse type used is: T 1.6 A / 250 V H (cutoff capacity 1500 A); 5.2 x 20. The magnetic current fuse is located on the measurement board. The magnetic current fuse type used is: F 5A/250 V, IEC 127, 5,2 x 20 mm CAUTION The fuses can only be replaced by fuses of the same type. Operating Instructions, 12/2010, A5E

64 Service and Maintenance 8.4 Recalibration Fuse for power supply Position of the fuses Magnetic current fuse 8.4 Recalibration Siemens Flow Instruments offers to recalibrate the sensor. The following calibrations are offered as standard: Standard matched pair calibration Customer specified matched pair calibration (up to 10 points) Accredited matched pair calibration Note For recalibration the memory unit must always be returned with the sensor See also Return procedures (Page 64) 62 Operating Instructions, 12/2010, A5E